I was reviewing an article about the effectiveness of a vaccine and it expressed these in % effectiveness = 1 - odds ratio. So far, so good.
But they showed confidence intervals around the %'s, both in text (e.g. 72%, 95% CI = 33.9% to 88.2%) and in a graph of those numbers (they had a bunch of results to display).
It struck me that the CIs are asymmetric (i.e 72-34 = 38, while 88-72 = 16) and this seemed a bit odd, especially for the graph. Should such graphs use log odds which has symmetric CIs?